JP2007080358A - Optical disk recorder - Google Patents

Optical disk recorder Download PDF

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Publication number
JP2007080358A
JP2007080358A JP2005265773A JP2005265773A JP2007080358A JP 2007080358 A JP2007080358 A JP 2007080358A JP 2005265773 A JP2005265773 A JP 2005265773A JP 2005265773 A JP2005265773 A JP 2005265773A JP 2007080358 A JP2007080358 A JP 2007080358A
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JP
Japan
Prior art keywords
information
file
writing
recording
optical disc
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Pending
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JP2005265773A
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Japanese (ja)
Inventor
Shinsuke Matsumoto
真佑 松本
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Funai Electric Co Ltd
船井電機株式会社
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Priority to JP2005265773A priority Critical patent/JP2007080358A/en
Publication of JP2007080358A publication Critical patent/JP2007080358A/en
Application status is Pending legal-status Critical

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883Methods for assignment of alternate areas for defective areas
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/18Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883Methods for assignment of alternate areas for defective areas
    • G11B2020/1893Methods for assignment of alternate areas for defective areas using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2562DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk recorder capable of preventing information from being impossible to be reproduced from an optical disk due to a failure in the write of the information to the optical disk in the optical disk device for recording the information by an additional recording system based on a UDF. <P>SOLUTION: When the write of an information block constituting a user information file and a control information file is a failure (NO in #2), the information block is written again (#5). When the write of all the information constituting the user information file and the control information file is ended, that is when the write of the information block constituting the user information file and the control information file is a success (YES in #3), an FE, a VAT and a VATICB which are file management information are written (#6). When the write of the FE, the VAT and the VATICB is a failure (NO in #7), the FE, the VAT and the VATICB are written again (#8). When the write of the FE, the VAT and the VATICB is a success (YES in #7), a recording operation is ended. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical disc recording apparatus for recording information on an optical disc such as a DVD.

  2. Description of the Related Art Conventionally, some optical disk recording apparatuses record information such as video and audio on a write-once optical disk such as a DVD-R by a recording system compliant with UDF (Universal Disk Format). In such an optical disc recording apparatus, a user information file including user information such as video and audio used by a user, and a control information file including control information for controlling user information in the user information file are stored in a predetermined data capacity. Are divided into information blocks and written on the optical disc, and file management information for managing the positions of the information blocks constituting the user information file and the control information file is written on the optical disc.

  The reproduction of user information from the optical disc is performed by specifying the writing position of each information block constituting the user information file and the control information file based on the file management information, reading the user information and control information in each information block, This is done by processing user information based on the control information.

  On the other hand, in an optical disc recording apparatus for recording information on a CD-RW, which is a rewritable (overwriteable) optical disc, using a recording method compliant with UDF, the presence or absence of a recording error in the file management information recorded on the optical disc is confirmed. When there is a recording error in management information, a recording power is set high, and a user information file and file management information are re-recorded on an optical disc by rewriting (overwriting) (for example, patents) Reference 1).

Also, when recording information on the optical disk, the optical head servo signal is detected, and if the optical head servo signal deviates from the specified value, the recording speed is reduced to prevent a recording error from occurring. An apparatus is known (for example, see Patent Document 2). There is also known an optical disc recording apparatus that improves recording quality by checking whether or not a recording error has occurred on an optical disc and reducing the recording speed when the number of occurrences of the recording error exceeds a reference value ( For example, see Patent Document 3).
JP 2003-272148 A JP 2004-319023 A JP 2003-317255 A

  By the way, when writing information blocks constituting the user information file and control information file to the optical disc, if writing of user information and control information in those information blocks fails (when a write error occurs), the information is Cannot read correctly during playback. That is, when the user information in the information block constituting the user information file has failed to be written, the user information such as video and audio corresponding to the portion where the writing has failed cannot be correctly reproduced. In addition, when the writing of control information in the information block constituting the control information file fails, the control information affects the control of user information in all information blocks constituting the user information file. All user information in the information file cannot be reproduced correctly.

  However, in the optical disc recording apparatus that records information by the above-described conventional UDF-compliant additional recording method, no measures are taken against the failure to write information in the information block. Therefore, it is conceivable to check whether or not the information in the information block has been successfully written, and when the information in the information block fails to be written, the information block including the information is rewritten.

  In an optical disk recording apparatus that records information by a write-once method compliant with UDF, an information block cannot be rewritten at the same position on the optical disk because it deals with a write-once optical disk. The block must be rewritten to another location on the optical disk. However, if the information block is simply rewritten and rewritten to another position on the optical disk, the writing position of the rewritten information block is not managed by the file management information, so the user information of the user information file is reproduced from the optical disk. Sometimes, the position of the rewritten information block cannot be specified, and the user information cannot be reproduced correctly. In addition, even if the contents disclosed in Patent Documents 1 to 3 described above are applied, the above problem cannot be solved.

  The present invention has been made to solve the above-described problems, and in an optical disc recording apparatus that records information by an additional recording method compliant with UDF, information is reproduced from the optical disc by failing to write information on the optical disc. An object of the present invention is to provide an optical disk recording apparatus that can prevent the situation from being impossible.

  In order to achieve the above object, the invention of claim 1 is a recording means for recording information by irradiating light onto an optical disc, and additional recording based on UDF (Universal Disk Format) for recording information on the optical disc by the recording means. Recording control means controlled by a method, the recording control means comprising: file writing means for writing an information file comprising a set of information to an optical disc; and file management for writing file management information for managing the writing position of the information file And a file writing means, when writing a user information file comprising user information used by a user, in addition to the control information comprising control information for controlling the user information in the user information file. Write the information file and store the user information file and control information file in the specified data. The file management information writing means FE (File Entry) indicating the writing position of the information block constituting the user information file and the control information file when the user information file is newly written. , VAT (Virtual allocation Table) indicating the correspondence between the writing position of the information block indicated by the FE and the writing position of the information block that is additionally written to update the user information in the user information file, and VAT In an optical disk recording apparatus that writes a VATICB (Virtual allocation Table Information Control Block) indicating a writing position, if the file writing means fails to write the information block constituting the user information file and the control information file, the information block is converted to ECC (Error Correcting Code The rewriting is repeated from the position immediately after the boundary, and the rewriting is repeated until the writing of the information block is successful. After all control information has been successfully written, FE, VAT, and VATICB are written. If writing of FE, VAT, and VATICB fails, the FE, VAT, and VATICB are re-started from the position immediately after the ECC boundary. This rewriting is repeated until writing and successful writing of the FE, VAT, and VATICB.

  The invention of claim 2 is a recording means for recording information by irradiating the optical disk with light, and a recording control means for controlling the recording of information on the optical disk by the recording means by an additional recording method compliant with UDF (Universal Disk Format). And the recording control means includes a file writing means for writing an information file comprising a set of information to the optical disk, and a file management information writing means for writing file management information for managing the writing position of the information file. In the recording device, when the file writing means fails to write the information constituting the information file, the file management information writing means rewrites the information block or information file having a predetermined data capacity including the information to another position. Rewriting information block or information file by file writing means To reflect the body, it is intended to write the file management information.

  According to a third aspect of the present invention, in the optical disk recording apparatus according to the second aspect, when the file management information writing means fails to write the file management information, the file management information is rewritten to another position.

  According to the first aspect of the present invention, when there is a failure in writing the information block constituting the user information file or the control information file to the optical disk, the information block is rewritten from the position immediately after the ECC boundary, and this rewriting is performed. After that, FE, VAT, and VATICB, which are file management information reflecting the rewriting position, are written on the optical disc. Thereby, when reproducing the user information of the user information file from the optical disk in which writing of the information block has failed, based on the FE, VAT, and VATICB reflecting the rewriting position of the information block that has failed to write, User information in the user information file is reproduced by the rewritten information block. Therefore, even when there is a failure in writing the information block constituting the user information file or the control information file to the optical disc, the user information of the user information file can be reproduced from the optical disc. Moreover, the rewriting of the information block is repeated until the writing of the information block is successful, and FE, VAT, and VATICB have successfully written all the user information in the user information file and all the control information in the control information file. Therefore, the user information of the user information file can be reproduced more reliably.

  In addition, if there is a failure in writing the FE, VAT, or VATICB to the optical disc, the FE, VAT, or VATICB is rewritten from the position immediately after the ECC boundary. As a result, when the user information file information is reproduced from the optical disc in which the writing of FE, VAT, or VATICB has failed, the information of the user information file is reproduced based on the rewritten FE, VAT, or VATICB. Is done. Therefore, even if there is a failure in writing the FE, VAT, or VATICB to the optical disc, the information of the user information file can be reproduced from the optical disc. In addition, since the rewriting of FE, VAT, or VATICB is repeated until the writing of the FE, VAT, or VATICB is successful, the information in the user information file can be more reliably reproduced.

  According to the invention of claim 2, if there is a failure in writing the information file information to the optical disk, the information is rewritten to another position on the optical disk, and the file management information reflecting this rewriting position is stored on the optical disk. Written. As a result, when the information file information is reproduced from the optical disk in which the information file information writing has failed, the information file is rewritten based on the file management information reflecting the rewriting position of the information that has failed to be written. Information in the information file is reproduced by the information. Therefore, even when there is a failure in writing the information file information to the optical disk, the information file information can be reproduced from the optical disk.

  According to the invention of claim 3, when there is a failure in writing the file management information to the optical disk, the file management information is rewritten to another position on the optical disk. As a result, when reproducing information file information from an optical disc that has failed to write file management information, information file information is reproduced based on the rewritten file management information. Therefore, even if there is a failure in writing the file management information to the optical disc, the information file information can be reproduced from the optical disc.

  Hereinafter, an optical disk recording apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of an optical disk recording apparatus. The optical disk recording apparatus 1 is an apparatus that records and / or reproduces information such as video and audio on a write-once optical disk 2 such as a DVD-R by a recording system conforming to UDF (Universal Disk Format).

  The optical disk recording apparatus 1 includes a control unit (recording control means) 11 including a CPU for controlling the optical disk recording apparatus 1, a disk sensor 12, a spindle motor 13, a seek motor 14, a laser driving unit 15, An optical head (recording means) 16, a recording signal processing unit 17, a read signal processing unit 18, a broadcast signal processing unit 19, an AV signal processing unit 20, a signal output unit 21, a memory 22, and a remote controller 23 A remote control receiving unit 24.

  The disk sensor 12 detects that the optical disk 2 has been inserted from a disk insertion section (not shown), and inputs the signal to the control section 11. The optical disc 2 inserted into the disc insertion portion is mounted on the spindle motor 13. The spindle motor 13 is rotationally driven under the control of the control unit 11 to rotate the mounted optical disk 2. The seek motor 14 is composed of a linear motor, and moves the optical head 16 in the radial direction of the optical disc 2 (seek operation) under the control of the control unit 11. The laser drive unit 15 controls the power and emission timing of the laser beam emitted from the optical head 16 under the control of the control unit 11.

  The optical head 16 records information on the optical disc 2 by irradiating the optical disc 2 with laser light to form a recording mark having a lower reflectance than the surroundings on the optical disc 2. The optical head 16 is recorded on the optical disc 2 by irradiating the optical disc 2 with laser light, receiving the reflected light from the optical disc 2, and outputting a read signal having a voltage level corresponding to the intensity of the reflected light. Read information. The power of the laser beam for reading information from the optical disc 2 is weaker than the power for recording information on the optical disc 2 so that no recording mark is formed on the optical disc 2.

  The recording signal processing unit 17 modulates a recording signal for recording information on the optical disc 2 under the control of the control unit 11 to generate a modulated recording signal. The read signal processing unit 18 performs waveform equalization, demodulation, and error correction processing on the read signal read from the optical disc 2, and reproduces the recording signal recorded on the optical disc 2.

  The broadcast signal processing unit 19 receives a television broadcast signal distributed from a broadcasting station via the antenna 19a under the control of the control unit 11, demodulates the television broadcast signal, and includes a video included in the television broadcast signal. Play signals and audio signals. The AV signal processing unit 20 encodes the video signal and the audio signal reproduced by the broadcast signal processing unit 19 under the control of the control unit 11 and generates a recording signal for recording information on the optical disc 2. To do. Also, the AV signal processing unit 20 decodes the recording signal reproduced by the read signal processing unit 18 under the control of the control unit 11 to reproduce the video signal and the audio signal. The signal output unit 21 sends the video signal and audio signal reproduced by the broadcast signal processing unit 19 and the video signal and audio signal reproduced by the AV signal processing unit 20 to a display and a speaker (not shown) via a signal output terminal 21a. Output.

  The memory 22 temporarily stores the recording signal generated by the AV signal processing unit 20 and the modulation recording signal generated by the recording signal processing unit 17 when information is recorded on the optical disc 2 under the control of the control unit 11. When the information is stored and the information is reproduced from the optical disc 2, the recording signal reproduced by the read signal processing unit 18 is temporarily stored.

  The remote controller 23 selects various channels of the optical disc recording apparatus 1 such as selection of a reception channel of a television broadcast signal, recording of video / audio distributed by the television broadcast signal onto the optical disc 2, reproduction of video / audio recorded on the optical disc 2, and the like. It is operated by a user to instruct an operation. The remote controller 23 is provided with various operation keys operated by the user to instruct various operations of the optical disc recording apparatus 1, and when the various operation keys are operated, an infrared signal associated with the operation is transmitted. To do. The remote control receiving unit 24 receives the infrared signal transmitted from the remote control 23 and converts it into an electrical signal, and outputs a signal corresponding to the operation of the remote control 23 to the control unit 11.

  The control unit 11 determines the instruction content by operating the remote controller 23 based on the output signal from the remote control receiving unit 24 and determines whether or not the optical disk 2 is inserted based on the detection output from the disk sensor 12. The control unit 11 then uses the optical disc as user information that can be used by the user for information such as video and audio included in the TV broadcast signal, based on the contents of the instruction by the operation of the remote controller 23 and whether or not the optical disc 2 is inserted. 2 is controlled, and a playback operation for playing back information such as video and audio recorded as user information on the optical disc 2 is controlled. Further, the control unit 11 controls various operations of the optical disc recording / reproducing apparatus 1.

  Recording of information such as video and audio included in the TV broadcast signal onto the optical disc 2 is performed by the AV signal processing unit 20 based on the video signal and audio signal included in the TV broadcast signal obtained from the broadcast signal processing unit 19. The recording signal processing unit 19 generates a modulated recording signal based on the recording signal, and the optical head 16 forms pits on the optical disc 2 with a length and an arrangement corresponding to the modulated recording signal. Is called. The reproduction of video and audio information recorded on the optical disc 2 is performed by reproducing the recording signal by the reading signal processing unit 18 based on the reading signal obtained from the optical head 16, and the AV signal processing unit based on the recording signal. 20, the video signal and the audio signal are reproduced, and the video signal and the audio signal are output from the signal output unit 21 to the display and the speaker.

  The control unit 11 controls the recording / reproduction of information on the optical disc 2 by an additional recording method compliant with UDF. That is, recording of information such as video and audio included in the television broadcast signal onto the optical disc 2 is performed by using the optical disc 2 as a user information file including a series of user information including a series of video and audio information included in the television broadcast signal. And a control information file composed of control information for controlling user information (a series of video and audio) in the user information file is written on the optical disc 2, and the writing positions of the user information file and the control information file are set. This is done by writing file management information for management onto the optical disc 2.

  At this time, the user information file and the control information file are divided into information block units of a predetermined data capacity and written in an unrecorded area of the optical disc 2, and FE (File Entry), VAT (Virtual allocation Table) are used as file management information. ), VATICB (Virtual allocation Table Information Control Block) is written in the unrecorded area of the optical disc 2.

  The FE is information indicating a writing position of information blocks constituting the user information file and the control information file when the user information file is newly written on the optical disc 2. The VAT is a relationship between the writing position of the information block indicated by the FE (that is, when the user information file is newly written) and the writing position of the information block additionally written to update the user information in the user information file. This is information indicating a correspondence relationship. VATICB is information indicating the VAT writing position, and is written at the last position of the recorded area.

  In addition, when updating the user information file already written on the optical disc 2, an information block for updating user information is added to the unrecorded area of the optical disc 2, and the updated VAT is added to the unrecorded area of the optical disc 2. Further, the VATICB whose contents are updated is added to the unrecorded area of the optical disc 2.

  Further, the reproduction of the user information file (a series of video and audio) written on the optical disc 2 is performed by each piece of information constituting the user information file and the control information file based on the FE, VAT, and VATICB written on the optical disc 2. This is performed based on the user information and control information in each information block by specifying the writing position of the block.

  FIG. 2A shows a user information file and control information when information such as video and audio included in a TV broadcast signal is newly recorded on the optical disc 2 (that is, a user information file is newly written on the optical disc 2). An example of writing a file and file management information to the optical disc 2 is shown. In the example shown in FIG. 2A, information blocks 51, 52,... 59 constituting a user information file 50, an information block 61 constituting a control information file 60, and a file at positions following the lead-in area 40. The FE 71, VAT 72, and VATICB 73 constituting the management information 70 are written.

  Each of the information blocks 51, 52,... 59 includes user information such as video and audio included in the television broadcast signal. The information block 61 includes control information for controlling user information in the information blocks 51, 52,. The FE 71 indicates the writing position of the information blocks 51, 52,... 59 and the information block 61. The VAT 72 indicates the writing position of the information blocks 51, 52,... 59, and the information block 61 (in the example shown in FIG. 2A, an information block that is additionally written to update user information) , Indicating the writing position of the information blocks 51, 52,... 59, and the information block 61). VATICB 73 indicates the write position of VAT 72. In the lead-in area 40, the writing position of the FE 71 is written.

  In the example shown in FIG. 2A, the write position of the FE 71 is specified by reading the lead-in area 40, and the write position of the VAT 72 is specified by reading VATICB 73 (the last position of the recorded area). . Then, reading positions of the information blocks 51, 52,... 59, and the information block 61 are specified by reading the FE 71 and the VAT 72, and the information blocks 51, 52,. By processing, user information in the information blocks 51, 52,... 59 is reproduced as user information constituting the user information file 50.

  FIG. 2B shows an example of writing the user information file, the control information file, and the file management information to the optical disc 2 when the user information in the user information file written on the optical disc 2 is updated. In the example shown in FIG. 2B, information blocks 52a, VAT72a, and VATICB 73a are written at positions following the recording position of VATICB 73.

  The information block 52a is added to update the contents of the information block 52. The VAT 72a is added to update the VAT 72 corresponding to the additional writing of the information block 52a, and the correspondence between the writing position of the information block 52 and the writing position of the information block 52a (that is, the information block 52 is changed to the information block 52a). 52a). The VATICB 73a is added to update the VATICB 73 in response to the additional writing of the VAT 72a, and indicates the writing position of the VATI 72a.

  In the example shown in FIG. 2B, the writing position of the FE 71 is specified by reading the lead-in area 40, and the writing position of the VAT 72a is specified by reading VATICB 73a (the last position of the recorded area). . Then, reading positions of the information blocks 51, 52a,... 59 and the information block 61 are specified by reading the FE 71 and the VAT 72a, and the information blocks 51, 52a,... 59 and the information block 61 are read. By processing, the user information in the information blocks 51, 52a,... 59 is reproduced as user information constituting the user information file 50.

  FIG. 3 is a flowchart of a recording operation when information such as video and audio included in the TV broadcast signal of the optical disc recording apparatus 1 is newly recorded on the optical disc 2 (that is, a user information file is newly written on the optical disc 2). Show. First, the control unit 11 writes the first information block of the information file on the optical disc 2 (# 1). When the information block has been successfully written (YES in # 2), the control unit 11 determines whether or not writing of all information in the information file has been completed (# 3), and all the information in the information file has been written. If the writing has not been completed (NO in # 3), the next information block of the information file is written (# 4), and the processes after # 2 are repeated. As a result, the information file is written on the optical disc 2 in units of information blocks.

  If the information block writing fails in the process of # 2 while the information file is being written to the optical disc 2 in units of information blocks (NO in # 2), the control unit 11 converts the information block to ECC (Error Correcting Code) Rewrite from the sector immediately after the boundary (# 5). The rewriting of the process of # 5 is repeated until the information block is successfully written. Therefore, after the previous information block is successfully written, the next information block is written. A file writing means is configured by the processing of # 1 to # 5.

  When the writing of all information in the information file is completed (YES in # 3), the control unit 11 writes FE, VAT, and VATICB that are file management information (# 6). That is, FE, VAT, and VATICB are written after all information blocks of the information file are successfully written. When the writing of FE, VAT, and VATICB is successful (YES in # 7), the control unit 11 ends the recording operation.

  If the writing of FE, VAT, and VATICB fails (NO in # 7), the control unit 11 rewrites the FE, VAT, and VATICB from the sector immediately after the ECC boundary (# 8). The rewriting of the process of # 8 is repeated until the writing of the FE, VAT, and VATICB is successful. When the writing of the FE, VAT, and VATICB is successful (YES in # 7), the control unit 11 End the recording operation. A file management information writing unit is configured by the processes of # 6 to # 8.

  4A, 4B, 4C, and 4D show examples of the writing process of the user information file, the control information file, and the file management information by the recording operation. According to the recording operation, first, as shown in FIG. 4A, information blocks 51 and 52 constituting the user information file 50 are written. Here, for example, when the writing of the information block 52 fails, the information block 52z composed of the original user information when the writing of the information block 52 has not failed is rewritten at a position subsequent to the recording position of the information block 52. .

  Thereafter, as shown in FIG. 4B, the information blocks 61 constituting the control information file 60 are written. For example, when the writing of the information block 61 fails, the information block 61 is positioned at a position following the recording position of the information block 61. The information block 61z composed of the original control information in the case where the writing of the data does not fail is rewritten.

  Then, as shown in FIG. 4C, the FE 71 is written. The FE 71 reflects the rewriting of the information block 52z and the rewriting of the information block 61z, and indicates the writing position of the information blocks 51, 52z,..., 59, 61z. Here, for example, if the writing of the FE 71 fails, the original writing position of the information blocks 51, 52z,..., 59, 61z in the case where the writing of the FE 71 has not failed is indicated at a position subsequent to the recording position of the FE 71. FE71z is rewritten.

  Thereafter, as shown in FIG. 4D, VAT 72 and VATICB 73 are written, and the recording operation is completed. If no information block or file management information has been written, the user information file, the control information file, and the file management information are written as shown in FIG.

  According to the optical disc recording apparatus 1 having such a configuration, when there is a failure in writing the information block constituting the user information file or the control information file to the optical disc 2, the information block is rewritten from the position immediately after the ECC boundary. After this rewriting, FE, VAT, and VATICB, which are file management information reflecting the rewriting position, are written on the optical disc 2. Thereby, when reproducing the user information of the user information file from the optical disc 2 in which the information block writing has failed, based on the FE, VAT, and VATICB reflecting the rewriting position of the information block that has failed to be written. The user information of the user information file is reproduced by the rewritten information block.

  Therefore, even when there is a failure in writing the information block constituting the user information file or the control information file to the optical disc 2, the user information of the user information file can be reproduced from the optical disc 2. Moreover, the rewriting of the information block is repeated until the writing of the information block is successful, and FE, VAT, and VATICB have successfully written all the user information in the user information file and all the control information in the control information file. Therefore, the user information of the user information file can be reproduced more reliably.

  If there is a failure in writing the FE, VAT, or VATICB to the optical disc 2, the FE, VAT, or VATICB is rewritten from the position immediately after the ECC boundary. Thereby, when reproducing the information of the user information file from the optical disk 2 in which the writing of FE, VAT, or VATICB has failed, the information of the user information file is based on the rewritten FE, VAT, or VATICB. Played.

  Therefore, even when there is a failure in writing the FE, VAT, or VATICB to the optical disc 2, the information of the user information file can be reproduced from the optical disc 2. In addition, since the rewriting of FE, VAT, or VATICB is repeated until the writing of the FE, VAT, or VATICB is successful, the information in the user information file can be more reliably reproduced.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible. For example, the optical disc 2 is not limited to the DVD-R, and may be another recording medium as long as an additional recording method based on UDF is applicable. The user information recorded on the optical disc 2 is not limited to information such as video and audio, but may be information such as music and documents.

1 is an electrical block configuration diagram showing a schematic configuration of an optical disc recording apparatus according to an embodiment of the present invention. It is a figure which shows the example of the writing state of the user information file to the optical disk of the optical disk recording device, a control information file, and file management information, (a) is a user information file at the time of newly writing a user information file, control The figure which shows the writing state of an information file and file management information, (b) is a figure which shows the writing state of the user information file, control information file, and file management information at the time of updating the user information file already written. 6 is a flowchart showing an information recording operation when writing a user information file of the optical disc recording apparatus. It is a figure which shows the example of the writing process of the user information file to the optical disk by the information recording operation | movement of the optical disk recording device, a control information file, and file management information, (a) is the rewriting state of the information block which comprises user information (B) is a diagram showing a rewrite state of an information block constituting a control information file, (c) is a diagram showing a rewrite state of an FE constituting file management information, and (d) is a user information file The figure which shows the state which completed writing of the control information file and file management information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk recording device 2 Optical disk 11 Control part (recording control means)
12 disk sensor 13 spindle motor 14 seek motor 15 laser drive unit 16 optical head (recording means)
17 Recording signal processing unit 18 Reading signal processing unit 19 Broadcast signal receiving unit 20 AV signal processing unit 21 Signal output unit 22 Memory 23 Remote control 24 Remote control receiving unit

Claims (3)

  1. A recording means for recording information by irradiating the optical disk with light, and a recording control means for controlling recording of information on the optical disk by the recording means by an additional recording method compliant with UDF (Universal Disk Format),
    The recording control means includes a file writing means for writing an information file consisting of a set of information to the optical disc, and a file management information writing means for writing file management information for managing the writing position of the information file,
    The file writing means writes a control information file consisting of control information for controlling user information in the user information file in addition to writing a user information file consisting of user information used by the user. Dividing the information file and control information file into information block units of a predetermined data capacity,
    The file management information writing means includes an FE (File Entry) indicating a writing position of an information block constituting the user information file and the control information file when the user information file is newly written, and writing of the information block indicated by the FE. VAT (Virtual allocation Table) indicating the correspondence between the position and the writing position of the information block that is additionally written to update the user information in the user information file, and VATICB (Virtual allocation Table Information) indicating the VAT writing position In an optical disk recording device that writes a control block)
    The file writing means includes
    If writing of the information blocks constituting the user information file and the control information file fails, the information block is rewritten from the position immediately after the ECC (Error Correcting Code) boundary, and this information block is rewritten until the information block is successfully written. Repeat writing,
    The file management information writing means
    After successfully writing all user information in the user information file and all control information in the control information file by the file writing means, writing FE, VAT, and VATICB,
    If writing of FE, VAT, and VATICB fails, the FE, VAT, and VATICB are rewritten from the position immediately after the ECC boundary, and this rewriting is repeated until the writing of the FE, VAT, and VATICB is successful. An optical disk recording apparatus characterized by the above.
  2. A recording means for recording information by irradiating the optical disk with light, and a recording control means for controlling recording of information on the optical disk by the recording means by an additional recording method compliant with UDF (Universal Disk Format),
    In the optical disc recording apparatus, the recording control means includes a file writing means for writing an information file comprising a set of information to the optical disc, and a file management information writing means for writing file management information for managing the writing position of the information file. ,
    When the file writing means fails to write the information constituting the information file, the file writing means rewrites the information block or information file having a predetermined data capacity including the information to another position,
    The optical disc recording apparatus, wherein the file management information writing means writes file management information reflecting rewriting of an information block or an information file by the file writing means.
  3.   3. The optical disc recording apparatus according to claim 2, wherein when the file management information writing unit fails to write the file management information, the file management information writing unit rewrites the file management information to another position.
JP2005265773A 2005-09-13 2005-09-13 Optical disk recorder Pending JP2007080358A (en)

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